Sliding-door fastener.



- 1-]. GARLSON. SLIDING DOOR FASTENER.

APPLICATION FILED JULY 27,1907.

Patented Oct. 20,1908

. sliding door fastener secured to the UNITED STATES PATENT OFFICE.

EDWIN OARLSON, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF ONE-HALF TO OARLSON, OF MINNEAPOLIS, MINNESOTA.

oanL M. E.

SLIDING-DOOR FASTENER.

Specification of Letters Patent.

Patented Oct. 20, 1908.

Application filed .Iuly 2'7, 1907. Serial No. 385,871.

To all whom it may concern:

Be it known that I, EDWIN CARLSON, a citizen of the United States, residing at lsclinneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Sliding- Door Fasteners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as Will en able others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved sliding door fastener especially adapted for use on grain doors for box cars; and to this end, it consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings; Figure 1 is a view in front elevation, showing the central portion of the body of a boX car and a grain door applied thereto, with my improved grain door. Fig. 2 is a horizontal section taken on the line a 12 of Fig. 1; and Fig. 3 is a view corresponding to Fig. 1, but showing the lock in :1 released position.

The numeral 1 indicates a portion of the body of an ordinary boa car, the same having in its sides the usual. door opening 2, to

which door opening a grain door 3 is applied. The grain door 3 may be of the ordinary or any desired construction, and mounted to slide vertically by any suitable means, not shown.

The improved fastener consists of a lever 41- hinged to the grain door 8, and a lock bolt hinged to the inside and to the intermediate portion of said. lever 4t and having its loweror free end formed with an out-turned hook 6. A look plate 7 secured to the floor of the box car 1 is adapted to receive the free or hooked end 6 of the lock bolt 5. The floor of the box car 1 is cut away at 7 under said lock plate 7 to afford a clearance for the free or hooked end 6 of the lever 4. The lock bolt 5, and that portion of the lever 4, between its hinge and the hinge of said lock bolt, forms a toggle lever which, when straightened out, forces the free or hooked end 6 of the lock bolt 5 into the lock seat 7 and holds the grain door so that it can not b emoved edgewise away from said lock seat 7. To secure the lever t and the lock bolt 5 together, so that the hooked end 6 of the lever 4 will be secured within the seat 7, a staple 8 is secured to the grain door near its lower edge, and arranged to project through alined slots 9 and 10 formed in said lever a and lock bolt 5. By passing a pin 11 through the projecting end of the staple 8, the lever and the lock bolt 5 may be se cured together.

If desired to further seal the car, a second car seal may be secured to the projecting end of the pin 11. To prevent the pin 11 from being lost, the same is secured to the lever t by a short chain 12. s

As is evident, the lever 4t and the lock bolt 5, hold the grain door against lateral movements, prevent the same from working upward under the continued movement of the car, and also prevent the door from be ing opened without first breaking the car seal.

WVhile I have shown my improved sliding door fastener applied to a grain door, for the purpose of illustration, the same may be applied to any sliding doo mounted for either vertical or horizontal movements.

What I claim is 1. The combination with a door and a frame, the latter having a lock seat adjacent to one edge of the door, of a lever hinged to said door, a lock bolt hinged to the intermediate portion of said lever and adapted to interlock with said lock seat when said lever and bolt are folded together, and means for locking said lever and lock bolt together when in their folded position, substantially as described.

2. The combination with a door and a frame, the latter having a lock seat adjacent to one edge of the door, of a lever hinged to said door, a lock bolt hinged to the intermediate portion of said lever and having a hooked end adapted to interlock with said lock seat against en dwise removal, when said lever and lock bolt are folded together, and means for locking said lever and lock bolt together when in their folded position, sub stantially as described.

3. The combination with a door and a frame, the latter having a lock seat adjacent to one edge of the door, of a lever hinged to said door, a lock bolt hinged to the intermediate portion of said lever, and having a hooked end adapted to interlock with said lock seat against endwise removal, when said lever and lock bolt are folded together, alined slots formed in said lever and lock bolt, and a staple secured to said door and arranged to project through said alined slots when the said lever and lock bolt are folded together, substantially as described.

4. The combination with a door and a f "211116, the latter having a lock seat adjacent to one edge of the door, of a lever hinged to said door, the lock bolt hinged to the intermediate portion of said lever and having a hooked end adapted to interlock with said lock seat against endwise removal when said lever and lock bolt are folded together, alined slots formed in said lever and lock bolt, a staple secured to said door and arranged to project through said alined slots when the said lever and lock bolt are folded together, and means for locking said lever and lock bolt to said staple, substantially as described.

In testimony whereof I afliX my signature in presence of two witnesses.

EDlVIN CARLSON. \Vitnesses H. D. KILGORE, M. E. RONEY. 

